BACKGROUND
In most countries, heparin is used in the initial treatment of patients with deep-vein thrombosis. Well-designed studies establishing the efficacy of heparin therapy are lacking, however.… (More)

New designs of lightguide systems, which emit linear polarized light with a high efficiency for transmissive and transflective LCD applications, are presented. These systems are equipped with nano-… (More)

This study prospectively evaluated the effect of the consistent use of a previously described anatomical lung segment chart on the interpretation of lung scans. Simultaneous perfusion/ventilation… (More)